Mis-localised protein yeast mutants wanted

Hello,
I have to organise a sub-cellular fractionation laboratory class for some
post-graduate students. I run an undergraduate class on sub-cellular
fractionation which I could use, but I don't feel this is "molecular
biological" enough. So I would like the post-grads to fractionate yeast
(perhaps more relevant for molecular biologists) rather than rat liver.
What would be very nice would be for them to fraction a variety of mutant
yeast which mis-localise a protein. So I suppose the protein itself would
have to be mutated in the targetting sequence - with the wild-type it goes
to the right place, in the mutants it is in the cytosol or whatever. A
tall order perhaps, but if anyone can help please contact me direct. Oh -
I suppose I would need an antibody as well!
Fergus Doherty,
dept. Biochemistry,
University Medical School,
Queen's Medical Centre,
Nottingham NG7 2UH
Tel: (0)115 970 9366 FAX (0)115 942 2225 Internet:
Fergus.Doherty at nott.ac.uk